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4 years ago

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A 500g sample of Potassium-40 is left to decay radioactively. After 3.9 x 109 years, about how many grams of Potassium-40 are ex

pected to remain? [The half-life of Potassium-40 is 1.3 x 109 years.]

2 answers:

ki77a [65]4 years ago

8 0

The answer is 62.5 grams

shusha [124]4 years ago

3 0

It is 62.5g i know for a fact i major and a teacher i'm science and math

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